FREE AND STUDY GAMES ABOUT DEN120 CH46 EXAM

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FREE AND STUDY GAMES ABOUT DEN120 CH46 EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -19 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Which of the four types of elastomeric materials has the best dimensional stability?

Answer:

Polysiloxane Question 2: Which of the following is an acceptable method for altering the setting time of alginate irreversible hydrocolloid impression material?

Answer:

Change the water temperature.

Question 3: What are the three curing stages of impression materials?

Answer:

Initial set, final set, final cure Question 4: Which of the following is not correct regarding reversible hydrocolloids?

Answer:

The material is 85% agar and 15% water.

Question 5: What type of impression tray is required with reversible hydrocolloid impressions?

Answer:

Water-cooled

Question 6: How are alginate impressions removed from the mouth?

Answer:

Use one quick, snap-out motion.

Question 7: What is the purpose of the calcium sulfate in impression alginate?

Answer:

It reacts with potassium alginate to form the gel.Question 8: An impression is a positive reproduction of teeth and surrounding oral tissues. The model created from the impression is a negative reproduction of the structures.

Answer:

Neither statement is correct.

Question 9: Which type of elastomeric material has the highest viscosity?

Answer:

Putty Question 10: Which impression material is used when an extremely accurate final impression is essential?

Answer:

Elastomeric Question 11: What position should the EFDA use while taking mandibular and maxillary impressions?

Answer:

Operator

Question 12: How are elastomeric impression materials mixed?

Answer:

With a paper pad and spatula and With an Automix system

Question 13: What is the working time of normal-set alginate impression material?

Answer:

• minutes

Question 14: The shelf life of alginate material is approximately __ months.

Answer:

12

Question 15: Which statement is correct regarding custom impression trays?

Answer:

They can be constructed from resin.

Question 16: Why would a dentist request preliminary impressions?

Answer:

To fabricate custom trays Question 17: What percent relative humidity is preferred for storing impressions?

Answer:

100 Question 18: Which material is the most durable for occlusal bite registrations?

Answer:

Zinc oxide-eugenol (ZOE) Question 19: Which material is one of the most popular impression materials used for bite registration?

Answer:

Polysiloxane